Physics

To find the work done to bring the object to rest, we will use the work-energy theorem, which states that the work done on an object is equal to the change in its kinetic energy.

 

Calculate the initial kinetic energy

The initial velocity of the object is , and the mass of the object is .

 

The initial kinetic energy () is:

 

Calculate the final kinetic energy

When the object comes to rest, its final velocity is

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